I was thinking sticks, maybe! But like...bigger sticks? Ones with more twigs coming off of them.

[They can sort of mimic the structure of wings without actually being properly shaped like them, he's figuring.

Vash brushes snow off his hands onto his pants before setting off into the edge of the forest just beyond the little clearing of snow they're working with, digging through the drifts to pull out bigger sticks that have been snowed over.]

The arms can be little ones!